122915479 has 2 divisors, whose sum is σ = 122915480. Its totient is φ = 122915478.

The previous prime is 122915459. The next prime is 122915537. The reversal of 122915479 is 974519221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122915479 - 2¹¹ = 122913431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122915459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61457739 + 61457740.

It is an arithmetic number, because the mean of its divisors is an integer number (61457740).

Almost surely, 2^122915479 is an apocalyptic number.

122915479 is a deficient number, since it is larger than the sum of its proper divisors (1).

122915479 is an equidigital number, since it uses as much as digits as its factorization.

122915479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 40.

The square root of 122915479 is about 11086.7253506164. The cubic root of 122915479 is about 497.2050442225.

The spelling of 122915479 in words is "one hundred twenty-two million, nine hundred fifteen thousand, four hundred seventy-nine".